I realize what you were saying to me, but im not going to take advice from someone who doesn't know my skill level in the hobby. After talking with the people at MFK as suggested they've made me feel a million times better, the hystrix is a quite hardy species and as long as you take care of the water the fish are going to be fine. My water paramaters are at the right level and so is the hospital tanks size. Ive read hundreds of articles on these rays before i made my order, i came here for re assurance but all i got was negativity, thats the thing about forums all people do is try to pick a a problem out of every single topic. Thank god for the people at MFK, excuse me; i obviously came to the wrong forum.